Know the basics of launching an Amazon EC2 instance. Know what architectures are suited for what Amazon EC2 pricing options. Know how to combine multiple pricing options that result in cost optimization and scalability. Know the benefits of enhanced networking. Know the capabilities of VM Import/Export. Know the methods for accessing an instance over the internet. There are additional ways to access an instance within an Amazon VPC, including private IP addresses and ENIs. Know the properties of the Amazon EC2 pricing options. Know what determines network performance. Every instance type is rated for low, moderate, high, or 10 Gbps network performance, with larger instance types generally having higher rating. Additionally, some instance types offer enhanced networking, which provides additional
improvement in network performance. Know what instance metadata is and how it’s obtained. Metadata is information about Amazon EC2 instance, such as instance ID, instance type, and security groups, that is available from within the instance. It can be obtained through an HTTP call to a specific IP address. Know how security groups protect instances. Security groups are virtual firewalls controlling traffic in and out of your Amazon EC2
instances. They are deny by default, and you can allow traffic by adding rules specifying traffic direction, port, protocol, and destination address (via Classless Inter-Domain Routing [CIDR] block). They are applied at the instance level, meaning that traffic between instances in the same security group must adhere to the rules of that security group. They are stateful, meaning that an outgoing rule will allow the response without a correlating incoming rule. Know how to interpret
the effect of security groups. When an instance is a member of multiple security groups, the effect is a union of all the rules in all the groups. Know the different Amazon EBS volume types, their characteristics, and their appropriate workloads. Magnetic volumes provide an average performance of 100 IOPS and can be provisioned up to 1 TB. They are good for cold and infrequently accessed data. General-purpose SSD volumes provide three IOPS/GB up to 10,000 IOPS, with smaller volumes able to burst 3,000 IOPS. They can be provisioned up to 16TB and are appropriate for dev/test environments, small databases, and so forth. Provisioned IOPS SSD can provide up to 20,000 consistent IOPS for volumes up to 16 TB. They are the best choice for workloads such as large databases executing many transactions. Know how to encrypt an Amazon EBS volume. Any volume type can be encrypted at launch. Encryption is based on AWS KMS and is transparent to applications on the attached instances. Understand the concept and process of snapshots. Snapshots provide a point-in-time backup of an Amazon EBS volume and are stored in Amazon S3. Subsequent snapshots are incremental—they only store deltas. When you request a snapshot, the point-in time snapshot is created immediately and the volume may continue to be used, but the snapshot may remain in pending status until all the modified blocks have been transferred to Amazon S3. Snapshots may be copied between regions. Know how Amazon EBS-optimized instances affect Amazon EBS performance. In addition to the IOPS that control the performance in and out of the Amazon EBS volume, use Amazon EBS-optimized instances to ensure additional, dedicated capacity for Amazon EBS I/O. Exercises
EXERCISE 3.1
EXERCISE 3.2
EXERCISE
3.3
EXERCISE 3.5
EXERCISE 3.6
EXERCISE 3.8
EXERCISE 3.9
Your web application needs four instances to support steady traffic nearly all of the time. On the last day of each month, the traffic triples. What is a cost-effective way to handle this traffic pattern?
Your order-processing application processes orders extracted from a queue with two Reserved Instances processing 10 orders/minute. If an order fails during processing, then it is returned to the queue without penalty. Due to a weekend sale, the queues have several hundred orders backed up. While the backup is not catastrophic, you would like to drain it so that customers get their confirmation emails faster. What is a cost-effective way to drain the queue for orders?
Which of the following must be specified when launching a new Amazon Elastic Compute Cloud (Amazon EC2) Windows instance? (Choose 2 answers)
You have purchased an m3.xlarge Linux Reserved instance in us-east-1a. In which ways can you modify this reservation? (Choose 2 answers)
Your instance is associated with two security groups. The first allows Remote Desktop Protocol (RDP) access over port 3389 from Classless Inter-Domain Routing (CIDR) block 72.14.0.0/16. The second allows HTTP access over port 80 from CIDR block 0.0.0.0/0. What traffic can reach your instance?
Which of the following are features of enhanced networking? (Choose 3 answers)
You are creating a High-Performance Computing (HPC) cluster and need very low latency and high bandwidth between instances. What combination of the following will allow this? (Choose 3 answers)
Which Amazon Elastic Compute Cloud (Amazon EC2) feature ensures that your instances will not share a physical host with instances from any other AWS customer?
Which of the following are true of instance stores? (Choose 2 answers)
Which of the following are features of Amazon Elastic Block Store (Amazon EBS)? (Choose 2 answers)
You are restoring an Amazon Elastic Block Store (Amazon EBS) volume from a snapshot. How long will it be before the data is available?
You have a workload that requires 15,000 consistent IOPS for data that must be durable. What combination of the following steps do you need? (Choose 2 answers)
Which of the following can be accomplished through bootstrapping?
How can you connect to a new Linux instance using SSH?
VM Import/Export can import existing virtual machines as: (Choose 2 answers)
Using the correctly decrypted Administrator password and RDP, you cannot log in to a Windows instance you just launched. Which of the following is a possible reason?
You have workload that requires 1 TB of durable block storage at 1,500 IOPS during normal use. Every night there is an Extract, Transform, Load (ETL) task that requires 3,000 IOPS for 15 minutes. What is the most appropriate volume type for this workload?
How are you billed for elastic IP addresses?
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https://www.linkedin.com/in/rajeshkumarin Which of the following are features of Amazon elastic block store?Amazon Elastic Block Storage offers point-in-time snapshots of EBS volumes for long-term durability. They are further backed up to the Amazon S3. Amazon EBS Snapshots are simple and automated. Further Amazon EBS Snapshots are automatically saved to the Amazon Simple Storage Service (Amazon S3) for long-term retention.
Which of the following are features of Amazon EBS select two?Amazon EBS allows you to create storage volumes and attach them to Amazon EC2 instances. Once attached, you can create a file system on top of these volumes, run a database, or use them in any other way you would use block storage.
Which of the following is a feature of Amazon EC2?Features of Amazon EC2
Amazon EC2 provides the following features: Virtual computing environments, known as instances. Preconfigured templates for your instances, known as Amazon Machine Images (AMIs), that package the bits you need for your server (including the operating system and additional software)
Which of the following is the Amazon block storage service?Amazon Elastic Block Store (Amazon EBS) is an easy-to-use, scalable, high-performance block-storage service designed for Amazon Elastic Compute Cloud (Amazon EC2).
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